• Proposed
  • Under Assessment
  • 3Preliminary Assessed
  • 4Assessed
  • 5Published

Dendrophora erumpens (Burt) Chamuris

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Scientific name
Dendrophora erumpens
(Burt) Chamuris
Common names
IUCN Specialist Group
Mushroom, Bracket and Puffball
Assessment status
Under Assessment
Proposed by
Catia Canteiro
Susana P. Cunha, Susana C. Gonçalves
Comments etc.
Catia Canteiro

Assessment Notes

Most records are old and there was a decline in observations in recent years so I was reticent in assigning it to LC despite its distribution.
I’m not sure if Switzerland is part of its native distribution either since there is only one observation outside of North America - should I include it in distribution map?


Dendrophora erumpens is a resupinate fungi mostly known from North America. Though it is known from around 45 sites, there are only 4 documented observations in the last 50 years. While it is possible that D. erumpens may have decreased in population size, it might also be misidentified or even synonymous with another species, Peniophora versiformis. Taxonomic revision and targeted search efforts are needed to clarify the validity of this species and calculate current population size and distribution. For now, species is assessed as Data Deficient (DD).

Taxonomic notes

Dendrophora erumpens is the only remaining species in the Dendrophora genus, while Dendrophora albobadia and D. versiformis are now accepted as part of the genus Peniophora. Synonyms:  Stereum erumpens, Stereum versiforme f. erumpens, Peniophora erumpens (Species Fungorum, 2023)
Though it is accepted as a distinct species from Peniophora versiformis, the two have been previously suggested as conspecific (Andreasen and Hallenberg 2009).

Why suggested for a Global Red List Assessment?

Geographic range

Generally reported for North America (USA and Canada), with the exception of a record in Switzerland (GBIF.org, 2023).

Population and Trends

D. erumpens has been documented in approximately 45 sites, but despite the large area of suitable habitat only 4 observations have been made in the last 50 years (3 in United States of America in 1978, 1986 and 2002 and 1 in Switzerland in 1996, the only observation outside of North America). (GBIF.org, 2023, MyCoPortal, 2023) This species is likely under recorded given its inconspicuous fruitbodies and may also be confused with Peniophora versiformis, a very similar fungus. Without more information, current records or targeted search efforts it is difficult to determine the reason for this decrease in observations in recent years and estimate current population size.

Population Trend: Uncertain

Habitat and Ecology

D. erumpens is a resupinate fungi and has been found growing on wood of various angiosperm species (e.g. Malus, Acer, Alnus, Castanea and Salix spp.) (Boidin, 1994).

Temperate Forest



Conservation Actions

Research needed

Taxonomic revision is needed, as well as targeted search efforts and research into ecology, population size and distribution.

TaxonomyPopulation size, distribution & trendsLife history & ecologyThreats

Use and Trade


Country occurrence

Regional Population and Trends

Country Trend Redlisted